1 files changed, 18 insertions, 1 deletions
diff --git a/src/lib/base/scan_name.h b/src/lib/base/scan_name.h
index 75f7d1089..981d54765 100644
--- a/src/lib/base/scan_name.h
+++ b/src/lib/base/scan_name.h
@@ -8,7 +8,7 @@
 #ifndef BOTAN_SCAN_NAME_H__
 #define BOTAN_SCAN_NAME_H__
 
-#include <botan/types.h>
+#include <botan/exceptn.h>
 #include <string>
 #include <vector>
 #include <botan/mutex.h>
@@ -126,6 +126,23 @@ class BOTAN_DLL SCAN_Name
       std::vector<std::string> m_mode_info;
    };
 
+// This is unrelated but it is convenient to stash it here
+template<typename T>
+std::vector<std::string> probe_providers_of(const std::string& algo_spec,
+                                            const std::vector<std::string>& possible)
+   {
+   std::vector<std::string> providers;
+   for(auto&& prov : possible)
+      {
+      std::unique_ptr<T> o(T::create(algo_spec, prov));
+      if(o)
+         {
+         providers.push_back(prov); // available
+         }
+      }
+   return providers;
+   }
+
 }
 
 #endif